Results 81 to 90 of about 378,438 (215)

Complete lift of a structure satisfying FK−(−)K+1F=0

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
The idea of f-structure manifold on a differentiable manifold was initiated and developed by Yano [1], Ishihara and Yano [2], Goldberg [3] and among others.
Lovejoy S. Das
doaj   +1 more source

A Recursive Scheme of First Integrals of the Geodesic Flow of a Finsler Manifold

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
We review properties of so-called special conformal Killing tensors on a Riemannian manifold $(Q,g)$ and the way they give rise to a Poisson-Nijenhuis structure on the tangent bundle $TQ$.
Willy Sarlet
doaj  

SEMI-RIEMANN METRİKLİ DOUBLE TANJANT DEMETİN DİFERENSİYEL GEOMETRİSİ

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
Özet: Bu çalışmada, diferensiyellenebilir bir manifold üzerindeki bir semi-Riemann metriğin ikinci mertebeden tam yüseltilmesi ile elde edilen nin bir semi-Riemann metriği olduğu gösterildi ve bu metriğin Levi-Civita koneksiyonu bileşenler cinsinden
İsmet AYHAN
doaj  

Generalized Sasaki Metrics on Tangent Bundles

open access: yesAnnals of the Alexandru Ioan Cuza University - Mathematics, 2015
Abstract We define a class of metrics that extend the Sasaki metric of the tangent manifold of a Riemannian manifold. The new metrics are obtained by the transfer of the generalized (pseudo-)Riemannian metrics of the pullback bundle π−1(TM⊕T*M), where π : T M → M is the natural projection.
openaire   +2 more sources

A new model for the theta divisor of the cubic threefold

open access: yesLe Matematiche, 2003
In this paper we give a birational model for the theta divisor of the intermediate Jacobian of a generic cubic threefold X . We use the standard realization of X as a conic bundle and a 4−dimensional family of plane quartics which are totally tangent to ...
Michela Artebani   +2 more
doaj  

ON THE LIFTS OF SEMI-RIEMANNIAN METRICS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1994
In this paper, we extend Sasaki metric for tangent bundle of a Riemannian manifold and Sasaki-Mok metric for the frame bundle of a Riemannian manifold [I] to the case of a semi-Riemannian vector bundle over a semi- Riemannian manifold. In fact, if E is a
doaj  

Finsler–Randers–Sasaki gravity and cosmology

open access: yesEuropean Physical Journal C: Particles and Fields
We present for the first time a Friedmann-like construction in the framework of an osculating Finsler–Randers–Sasaki (F–R–S) geometry. In particular, we consider a vector field in the metric on a Lorentz tangent bundle, and thus the curvatures of ...
E. Kapsabelis   +2 more
doaj   +1 more source

On the CR structure of the tangent sphere bundle

open access: yesLe Matematiche, 1995
We adopt the methods of pseudohermitian geometry (cf. [16]) to study the tangent sphere bundle U(M) over a Riemannian manifold M. If M is an elliptic space form of sectional curvature 1 then U(M) is shown to be globally pseudo-Einstein (in the sense of J.
Elisabetta Barletta, Sorin Dragomir
doaj  

On tangent bundles of Walker four-manifolds

open access: yesOpen Mathematics
The aim of this study is to explore the complete lifts of almost Norden structures on tangent bundles of Walker four-manifolds. Furthermore, we examine the integrability conditions of the complete lifts JC{J}^{C} of the proper almost complex structure ...
Çayir Haşim   +2 more
doaj   +1 more source

Subbundles of the tangent bundle [PDF]

open access: yesTransactions of the American Mathematical Society, 1974
openaire   +2 more sources

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